Revert "Remove FX_Alloc() null checks now that it can't return NULL."

core/src/fxcodec/codec/fx_codec_icc.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
  
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "../../../include/fxcodec/fx_codec.h"
 #include "codec_int.h"
 #include "../lcms2/include/fx_lcms2.h"
 const FX_DWORD N_COMPONENT_LAB = 3;
@@ skipping 267 matching lines @@
     return cs;
 }
 ICodec_IccModule::IccCS CCodec_IccModule::GetProfileCS(IFX_FileRead* pFile)
 {
     if (pFile == NULL) {
         return IccCS_Unknown;
     }
     ICodec_IccModule::IccCS cs;
     FX_DWORD dwSize = (FX_DWORD)pFile->GetSize();
     FX_LPBYTE pBuf = FX_Alloc(FX_BYTE, dwSize);
+    if (pBuf == NULL) {
+        return IccCS_Unknown;
+    }
     pFile->ReadBlock(pBuf, 0, dwSize);
     cs = GetProfileCS(pBuf, dwSize);
     FX_Free(pBuf);
     return cs;
 }
 FX_DWORD TransferProfileType(FX_LPVOID pProfile, FX_DWORD dwFormat)
 {
     cmsColorSpaceSignature cs = cmsGetColorSpace(pProfile);
     switch (cs) {
         case cmsSigXYZData:
@@ skipping 183 matching lines @@
     }
     FX_LPVOID pProofProfile = NULL;
     if (pProofParam) {
         pProofProfile = CreateProfile(pProofParam, Icc_CLASS_PROOF, &key);
     }
     key << dwInputProfileType << dwOutputProfileType << dwIntent << dwFlag << (pProofProfile != NULL) << dwPrfIntent << dwPrfFlag;
     CFX_ByteStringC TransformKey(key.GetBuffer(), key.GetSize());
     CFX_IccTransformCache* pTransformCache;
     if (!m_MapTranform.Lookup(TransformKey, (FX_LPVOID&)pTransformCache)) {
         pCmm = FX_Alloc(CLcmsCmm, 1);
+        if (pCmm == NULL) {
+            return NULL;
+        }
         pCmm->m_nSrcComponents = T_CHANNELS(dwInputProfileType);
         pCmm->m_nDstComponents = T_CHANNELS(dwOutputProfileType);
         pCmm->m_bLab = T_COLORSPACE(pInputParam->dwFormat) == PT_Lab;
         pTransformCache = new CFX_IccTransformCache(pCmm);
         if (pProofProfile) {
             pTransformCache->m_pIccTransform = cmsCreateProofingTransform(pInputProfile, dwInputProfileType, pOutputProfile, dwOutputProfileType,
                                                pProofProfile, dwIntent, dwPrfIntent, dwPrfFlag);
         } else {
             pTransformCache->m_pIccTransform = cmsCreateTransform(pInputProfile, dwInputProfileType, pOutputProfile, dwOutputProfileType,
                                                dwIntent, dwFlag);
@@ skipping 859 matching lines @@
     FX_BYTE c1 = FXSYS_round(c * 255);
     FX_BYTE m1 = FXSYS_round(m * 255);
     FX_BYTE y1 = FXSYS_round(y * 255);
     FX_BYTE k1 = FXSYS_round(k * 255);
     FX_BYTE r, g, b;
     AdobeCMYK_to_sRGB1(c1, m1, y1, k1, r, g, b);
     R = 1.0f * r / 255;
     G = 1.0f * g / 255;
     B = 1.0f * b / 255;
 }